US5207118A - Pedal shaft core - Google Patents
Pedal shaft core Download PDFInfo
- Publication number
- US5207118A US5207118A US07/763,244 US76324491A US5207118A US 5207118 A US5207118 A US 5207118A US 76324491 A US76324491 A US 76324491A US 5207118 A US5207118 A US 5207118A
- Authority
- US
- United States
- Prior art keywords
- shaft core
- conical
- casing
- pedal shaft
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K19/00—Cycle frames
- B62K19/30—Frame parts shaped to receive other cycle parts or accessories
- B62K19/34—Bottom brackets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/02—Hubs adapted to be rotatably arranged on axle
- B60B27/023—Hubs adapted to be rotatably arranged on axle specially adapted for bicycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M3/00—Construction of cranks operated by hand or foot
- B62M3/003—Combination of crank axles and bearings housed in the bottom bracket
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2164—Cranks and pedals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2164—Cranks and pedals
- Y10T74/2168—Pedals
Definitions
- the present invention relates to a shaft, and more particularly to a pedal shaft core designed with improved structures.
- a conventional pedal shaft core of the prior art is constructed in such a manner that the shaft core is substantially perpendicular to the contact surface of the shaft and that it is of a ball bearing type.
- the pedal shaft core of the prior art is inherently defective in that it cannot be locked securely and in that it cannot be stabilized easily during the rotation thereof.
- the pedal shaft core of the prior art comprises the grease filling ports located at the bottom portion of the casing thereof.
- the task of assembling a pedal shaft core of the prior art is extremely tedious, because each of the inner holes of the grease filling ports must be arranged in alignment with each of the shaft holes located in the interior of the shaft.
- the pedal shaft core of the prior art must be placed in an inclined position or in an upside down position in order to permit the user thereof to inject the grease thereinto, because all grease filling ports are located at the bottom of the shaft core.
- the primary objective of the present invention are accomplished by an improved shaft core characterized in that the contact surfaces of both shaft core and shaft bearing are designed to be oblique and conical to enable the bearing to comprise a roller nest bearing and a casing of circular and conical arc so as to enhance the stability of the shaft core.
- the toothed cup of the shaft core comprises an grease filling apparatus of an inclined type located on the external surface thereof.
- the improved shaft core is further composed of a pair of W-shaped dual non-return washers of waterproof and oil-proof nature.
- FIG. 1 shows a three-dimensional and sectional view of a pedal shaft core of prior art.
- FIG. 2 shows an exploded view of the preferred embodiment of the present invention.
- FIG. 2A is an enlarged cross-section of the washer 61 of FIG. 2.
- FIG. 3 shows a sectional view of the assembled pedal shaft core of the present invention.
- the preferred embodiment of the present invention is shown comprising two oblique and conical surfaces 11 and 12, which serve as the contact surfaces between the shaft core 1 and the shaft bearing.
- the shaft bearings are provided with two roller nests 2 and 21 of oblique and conical construction, which consist of slots 2b and 21b. Rollers 2a and 21a are lodged respectively in the slots 2b and 21b.
- the pedal shaft core of the present invention further comprises two casings 3 and 31 of circular conical art construction in such a manner that the roller nests 2 and 21 are positioned in the interior of casings 3 and 31.
- the structural design as such eliminates the use of ball bearing of prior art.
- the toothed cups 4 and 41 comprise respectively circular cambered portions 4a and 41a.
- an inclined grease filling apparatus 5 which communicates with the circular cambered portion 4 a and comprises therein a steel ball 5a and a spring 5b.
- Two W-shaped non-return washers 6 and 61 are arranged respectively in the spaces located between the toothed cups 4 and 41 and the roller nests 2 and 21 in order to avert the leakage of grease and to prevent the water from entering the roller nest bearings.
- FIG. 3 the preferred embodiment of the present invention is shown comprising no ball bearings of prior art, which have been replaced in the present invention by the contact surfaces 11 and 12 of oblique and conical construction so as to ensure a greater stability of the pedal shaft core of the present invention.
- the rotational stability of the pedal shaft core of the present invention is further enhanced by the roller nest casings 3 and 31 of circular conical arc construction, which are capable of correcting any eccentric mass, thereby resulting in a greater impact resistance and abrasion resistance thereof and in a longer service lift thereof.
- the toothed cup 4 comprises a grease filling apparatus 5, which is located at the end portion thereof and communicates with circular cambered portion 4a. Therefore, the operator can inject the grease easily into the grease filling apparatus 5 without having to put the shaft core in an inclined position or an upside down position.
- the injected grease is capable of flowing into the interior of the shaft by virtue of the presence of steel ball 5a and the expansion and the compression action of the spring 5b.
Abstract
Description
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/763,244 US5207118A (en) | 1991-09-20 | 1991-09-20 | Pedal shaft core |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/763,244 US5207118A (en) | 1991-09-20 | 1991-09-20 | Pedal shaft core |
Publications (1)
Publication Number | Publication Date |
---|---|
US5207118A true US5207118A (en) | 1993-05-04 |
Family
ID=25067277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/763,244 Expired - Fee Related US5207118A (en) | 1991-09-20 | 1991-09-20 | Pedal shaft core |
Country Status (1)
Country | Link |
---|---|
US (1) | US5207118A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5379665A (en) * | 1991-06-19 | 1995-01-10 | Shimano Inc. | Bicycle pedal |
US5433534A (en) * | 1994-08-22 | 1995-07-18 | Chen; Chia-Ching | Fastening device of bicycle pedal axle |
US6668533B2 (en) * | 2001-04-26 | 2003-12-30 | American Lawn Mower Co. | Reel mower and bearing assembly |
US20040045400A1 (en) * | 2002-09-09 | 2004-03-11 | Profile Racing, Inc. | Bicycle crank arm bearing bracket |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US747895A (en) * | 1901-10-14 | 1903-12-22 | Mitchell F Mccarthy | Roller-bearing. |
GB429243A (en) * | 1934-11-28 | 1935-05-27 | Carl Alexander Drenowatz | Pedal crank bearing for cycles |
AT158682B (en) * | 1936-12-17 | 1940-05-10 | George Albert Ure | Stove. |
US2659637A (en) * | 1950-06-14 | 1953-11-17 | Roller Bearing Co Of America | Roller bearing for compensating shaft misalignment |
US2990223A (en) * | 1955-06-06 | 1961-06-27 | Best Frank Ellison | Tapered roller bearing |
US3937539A (en) * | 1973-12-19 | 1976-02-10 | The Timken Company | Bearing assembly having press-fitted thrust ribs |
US4010987A (en) * | 1975-10-23 | 1977-03-08 | C. L. Frost & Son, Inc. | Removable seal for bearings |
US4129343A (en) * | 1976-10-22 | 1978-12-12 | Nadella | Unitary self-aligning bearing assembly |
US4172620A (en) * | 1978-07-24 | 1979-10-30 | Marti Milford F | Axle-hub assembly |
US4883368A (en) * | 1987-12-08 | 1989-11-28 | Stein James A | Grease injector for bicycle crank bearings |
US5024121A (en) * | 1990-10-15 | 1991-06-18 | Hsieh Kin H | Hub assembly of a bicycle and the like |
-
1991
- 1991-09-20 US US07/763,244 patent/US5207118A/en not_active Expired - Fee Related
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US747895A (en) * | 1901-10-14 | 1903-12-22 | Mitchell F Mccarthy | Roller-bearing. |
GB429243A (en) * | 1934-11-28 | 1935-05-27 | Carl Alexander Drenowatz | Pedal crank bearing for cycles |
AT158682B (en) * | 1936-12-17 | 1940-05-10 | George Albert Ure | Stove. |
US2659637A (en) * | 1950-06-14 | 1953-11-17 | Roller Bearing Co Of America | Roller bearing for compensating shaft misalignment |
US2990223A (en) * | 1955-06-06 | 1961-06-27 | Best Frank Ellison | Tapered roller bearing |
US3937539A (en) * | 1973-12-19 | 1976-02-10 | The Timken Company | Bearing assembly having press-fitted thrust ribs |
US4010987A (en) * | 1975-10-23 | 1977-03-08 | C. L. Frost & Son, Inc. | Removable seal for bearings |
US4129343A (en) * | 1976-10-22 | 1978-12-12 | Nadella | Unitary self-aligning bearing assembly |
US4172620A (en) * | 1978-07-24 | 1979-10-30 | Marti Milford F | Axle-hub assembly |
US4883368A (en) * | 1987-12-08 | 1989-11-28 | Stein James A | Grease injector for bicycle crank bearings |
US5024121A (en) * | 1990-10-15 | 1991-06-18 | Hsieh Kin H | Hub assembly of a bicycle and the like |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5379665A (en) * | 1991-06-19 | 1995-01-10 | Shimano Inc. | Bicycle pedal |
US5433534A (en) * | 1994-08-22 | 1995-07-18 | Chen; Chia-Ching | Fastening device of bicycle pedal axle |
US6668533B2 (en) * | 2001-04-26 | 2003-12-30 | American Lawn Mower Co. | Reel mower and bearing assembly |
US20040045400A1 (en) * | 2002-09-09 | 2004-03-11 | Profile Racing, Inc. | Bicycle crank arm bearing bracket |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
AS | Assignment |
Owner name: YST CORPORATION, TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHEN, CHIA-CHING;REEL/FRAME:006746/0196 Effective date: 19931016 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20010504 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |